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Carl Edward Sagan (/ˈseɪɡən/; November 9, 1934 – December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences. He is best known for his work as a science popularizer and communicator. His best known scientific contribution is research on extraterrestrial life, including experimental demonstration of the production of amino acids from basic chemicals by radiation. Sagan assembled the first physical messages sent into space: the Pioneer plaque and the Voyager Golden Record, universal messages that could potentially be understood by any extraterrestrial intelligence that might find them. Sagan argued the now accepted hypothesis that the high surface temperatures of Venus can be attributed to and calculated using the greenhouse effect.& More about Carl Sagan
The most expensive item with a signature of Carl Sagan (Carl Sagan Signed Cornell University Letter Autograph PSA/DNA Authentic TLS) was sold on eBay in July 2013 for $999.00 while the cheapest item (Carl Sagan hand signed index card) found a new owner for $5.50 in September 2010. The month with the most items sold (3) was January 2008 with an average selling price of $99.00 for an autographed item of Carl Sagan. Sold items reached their highest average selling price in May 2014 with $249.95 and the month that saw the lowest prices with $51.00 was December 2009. In average, an autographed item from Carl Sagan is worth $100.00.
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Most recently, these items with a signature of Carl Sagan were sold on eBay - click here for more items.
|Picture||Item Title ▼||Price||Store|
|Carl Sagan Autographed Copy " Cosmic Connection" 1st Ed||$51.00|
|Carl Sagan COSMOS Signed Title Page||$41.00|
|CARL SAGAN SIGNED 1969 MOON LANDING FDC W/PRINT||$41.00|
|Carl Sagan Signed Book " Space Travel & Astronomy"-N/R!||$9.95|
|CARL SAGAN SIGNED BOOK PAGE FROM COSMOS AUTOGRAPH||$78.77|
|CARL SAGAN SIGNED FDC & FREAT COLOR PRINT||$25.99|
|Carl Sagan Signed First Day Cover||$33.44|
|PBS Cosmos Sci-Fi Carl Sagan signed 1985 Contact novel!||$39.75|
|TV Astronomer Carl Sagan signed 1980 Cosmos book-NICE!||$65.98|
|TV Astronomer Carl Sagan signed 1980 Cosmos book-NICE!||$40.00|
Carl Sagan Papers Reveal Astronomer's Robust Reading List (07/11/12): The personal papers of late scientist and astronomer Carl Sagan reveal there's much more to the thinker than meets the eye--such as he's a loyal reader of Pluto, and read the Bible "in part."
Carl Sagan's cosmos of papers finds a home (06/29/12): Creator of TV's "Family Guy" provides financing for the Library of Congress to house treasures.
ArtsBeat: Creator of 'Family Guy' Donates Carl Sagan Papers to Library of Congress (06/27/12): Seth MacFarlane covered the undisclosed costs of donating to the library papers that filled more than 800 filing-cabinet drawers.
A Peek Inside Astronomer Carl Sagan's Mind (06/27/12): The astronomer Carl Sagan made it his life's work to engage the public in the world of science and exploration. The Library of Congress announced Wednesday that it's acquired his personal papers. Host Audie Cornish talks with Ann Druyan, Sagan's widow.
Carl Sagan's cosmos of papers finds a home (06/2012): Creator of TV's "Family Guy" provides financing for the Library of Congress to house treasures.